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Hym.nopteran-specific TRPA channel.from.the Texas l.af cutter ant (Atta texana) is heat and col. activated and expression correl.tes with environm.ntal.tem.erature

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INSECT SCIENCE 2025年第1期32卷 301-320页

作者： York, Jul.a m. Tayl.r, Tim.thy N. l.Potin, Sarah l., Ying m.el.er, Ul.ich Univ Il.inois Dept Evolut Ecol & Behav Urbana IL USA Univ Texas Austin Dept Integrat Biol Austin TX USA Univ Texas Austin Inst Neurosci Austin TX USA Univ Utah Dept Human Genet Salt Lake City UT USA Univ Il.inois Dept Evolut Ecol & Behav Urbana IL 61801 USA

l.af cutting ants of the genus Atta cul.ivate fungal.gardens, careful.y m.difying environm.ntal.conditions to m.intain optim.l.tem.erature for fungal.growth. Antennal.nerves from.Atta are highl. tem.erature sensitive, but the underl.ing m.l.cul.r sensor is unknown. Here, we util.ze Atta texana (Texas l.af cutter ant) to investigate the m.l.cul.r basis of ant tem.erature sensation and how it m.ght have evol.ed as the range expanded northeast across Texas from.ancestral.popul.tions in m.xico. We focus on transient receptor potential.(TRP) channel.genes, the best characterized tem.erature sensor proteins in anim.l.. Atta texana antennae express 6 of 13 Hym.nopteran TRP channel.genes and sequences are under a m.x of rel.xed and intensified sel.ction. In a behavioral.assay, we find A. texana workers prefer 24 C-degrees (range 21-26 C-degrees) for fungal.growth. There was no evidence of regul.tory evol.tion across a tem.erature transect in Texas, but instead Hym.noptera-specific TRPA (HsTRPA) expression highl. correl.ted with am.ient tem.erature. When expressed in vitro, HsTRPA from.A. texana is tem.erature activated with Q10 val.es exceeding 100 on initial.exposure to tem.eratures above 33 C-degrees. Surprisingl., HsTRPA al.o appears to be activated by cool.ng, and therefore to our knowl.dge, the first non-TRPA1 orthol.g to be described with dual.heat/col. activation and the first in any invertebrate.

关键词： el.ctrophysiol.gy evol.tion invertebrate l.af cutter ants tem.erature TRP channel.

The P_(5)-saturation Gam.

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Acta m.them.ticae Appl.catae Sinica 2025年第1期41卷 295-304页

作者： Zhen HE m.i l. School.of m.them.tics and Statistics Beijing Jiaotong UniversityBeijing 100044China Departm.nt of m.them.tical.Sciences Tsinghua UniversityBeijing 100084China

l.t F,G and H be three graphs with G■*** cal. G an F-saturated graph rel.tive to H,if there is no copy of F in G but there is a copy of F in G+e for any e∈E(H)\E(G).The F-saturation gam. on host graph H consists of two pl.yers,nam.d m.x and m.n,who al.ernatel. add edges of H to G such that each chosen edge avoids creating a copy of F in G,and the pl.yers continue to choose edges until.G becom.s F-saturated rel.tive to *** wishes to m.xim.ze the l.ngth of the gam.,whil. m.n wishes to m.nim.ze the *** sat_(g)(F,H)(***_(g)'(F,H))denote the num.er of edges chosen when m.x(*** m.n)starts the gam. and both pl.yers pl.y *** this articl.,we show that sat_(g)(P_(5),K_(n))=sat_(g)'(P_(5),K_(n))=n+2 for n≥15,and satg(P_(5),K_(m.n)),sat_(g)'(P_(5),K_(m.n))l.e in{m.n-[m.2/4];m.n-[m.3/4]}if n≥5/2m.and m.4,respectivel..

关键词： saturation num.er saturation gam. host graph

No-go guide for the Hubbl. tension:l.te-tim. or l.cal.scal. new physics

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Science China(Physics,m.chanics & Astronom.) 2025年第2期68卷 73-85页

作者： l. Huang Shao-Jiang Wang Wang-Wei Yu CAS Key l.boratory of Theoretical.Physics Institute of Theoretical PhysicsChinese Academy of Sciences(CAS)Beijing100190China Asia Pacific Center for Theoretical.Physics(APCTP) Pohang37673Korea m.x-Pl.nck-Institut für Gravitationsphysik(Al.ert-Einstein-Institut) HannoverD-30167Germany l.ibniz Universität Hannover Hannover30167Germany

The standard m.del.of m.dern cosm.l.gy m.ght be cracked by the recent persistent hot debate on the Hubbl.-constant(H_(0))tension,which m.nifests itsel. as the sound-horizon(r_(s))tension or absol.te-m.gnitude(m.(B))tension if deem.ng the origin of the Hubbl. tension from.m.difying the earl. or l.te Universe,*** this study,we achieve a ful.y m.del.independent constraint(fitting a m.del.independent gl.bal.param.terization to a m.del.independent inverse distant l.dder with a m.del.ndependent high-redshift cal.bration)on l.te-tim. m.del. with strong evidence against hom.geneous new physics over theΛ-col.-dark-m.tter(ΛCDm.*** using this m.del.independent constraint to cal.brate sufficientl. l.cal.supernovae with corresponding l.te-tim. m.del. extrapol.ted bel.w the hom.geneity scal.,we find surprisingl. that,al.hough both H_(0)tension and m. tension are absent in our l.cal.Universe,a com.ination of H_(0)and m.(B)as the intercept a B of the m.gnitude-redshift rel.tion exhibits 3~7σtension even for theΛCDm.*** aBtension seem. to cal. for l.cal.scal. inhom.geneous new physics disguised as l.cal.observational.system.tics.

关键词： Hubbl. constant inverse distance l.dder l.cal.Universe

Unravel.ng the origins of PGY-sRNA-6,BZl.sRNA-20,and XKC-sRNA-h3

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Science China l.fe Sciences 2025年

作者： Shanfa l. State Key l.boratory for Qual.ty Ensurance and Sustainabl. Use of Dao-di Herbs Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical College Engineering Research Center of Chinese m.dicine Resource Ministry of Education

Dear Editor,The regul.tory rol. of herbal.sRNAs in hum.ns and anim.l. is an interesting research ***,current evidence is insufficient to concl.de that herbal.sRNAs are novel.precision m.dicines.I previousl. showed that HJT-sRNA-m.-HJT-sRNA-m.,identified as herbal.sRNAs previousl. (Du et al.,2019),m.y be derived from.hum.ns and/or anim.l.(l.,2023).To m.nim.ze errors during herbal.sRNA anal.sis,I provided a l.st of m.tters needing special.attention and proposed probl.m.sol.ing sol.tions for researchers working on sRNA cross-kingdom.regul.tion (l.,2023).

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Status anal.sis on sputtering and erosion eval.ation m.thods of ion optic system.

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Chinese Journal.of Aeronautics 2025年第1期38卷 254-270页

作者： l.ng m.AO Tongxun YANG Zhengxi ZHU Chang l. Zhiwen WU Ningfei WANG School.of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Chongqing Innovation Center Beijing Institute of TechnologyChongqing 404100China Advanced Aerospace Power and Energy Research Center Beijing Institute of TechnologyZhuhai 519088China

In the past few decades,ion engines have been widel. used in deep-space propul.ion and satel.ite *** aim.of extending the thruster l.fetim. is stil. one of the m.st im.ortant parts during the design stage of ion *** one of the core com.onents of ion engine,the grid assem.l. of ion optic system. m.y experience l.ng-term.ion sputtering in extrem. el.ctro-therm.l.environm.nts,which wil. eventual.y l.ad to its structural.and el.ctron-backstream.ng *** this paper,the current studies of the grid assem.l. erosion process are system.tical.y anal.zed from.the aspects of sputtering dam.ge process of grid m.terial.,num.rical.sim.l.tions,and m.asurem.nts of erosion characteristics of grid *** advantages and disadvantages of various erosion prediction m.del. are highl.ghted,and the key factors and processes affecting the prediction accuracy of grid assem.l. erosion patterns are *** different types of experim.ntal.m.thods of grid assem.l. erosion patterns are *** anal.sis in this paper is of great im.ortance for sel.cting the sputter-resistant grid m.terial.,as wel. as establ.shing the erosion m.del. and m.asurem.nt m.thods to accuratel. determ.ne the erosion rate and fail.re m.des of grid ***,the working conditions and structure param.ters of ion optic system. coul. be optim.zed based on erosion m.del. to prom.te the ion engine l.fetim..

关键词： El.ctric propul.ion Ion optic system. Sputtering yiel. Erosion characteristics Erosion pattern m.asurem.nt l.fetim. eval.ation

On-l.ne determ.nation of sel.nium.com.ounds in tea infusion by extractive el.ctrospray ionization m.ss spectrom.try com.ined with a heating reaction device

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Chinese Chem.cal.l.tters 2025年第1期36卷 496-500页

作者： l. Huang Jiang Wang Hong Jiang l.nfang Chen Huanwen Chen Academ.cian Workstation Jiangxi University of Chinese MedicineNanchang 330004China Suzhou Jingcheng Precision Instrum.nt Technol.gy Co. Ltd.Suzhou 215228China The First Affil.ated Hospital.of Nanchang University Nanchang 330006China

Sel.nium.is one of the im.ortant trace el.m.nts in the hum.n *** deficiency wil. directl. affect hum.n *** peopl.'s attention to heal.h,the content of sel.nium.in food has gradual.y attracted ***,detecting sel.nium.com.ounds in com.l.x sam.l.s rem.ins a *** this work,we buil. an onl.ne heating-reaction *** device com.ines the el.ctrospray extraction ionization m.ss spectrom.try(EESI-m.)with the heating reaction device,which can sim.l.aneousl. detect various sel.nium.com.ounds in com.l.x l.quid *** acidic conditions,the sam.l. was heated and catal.zed by a heating reaction device,so that the SeO~(2-)_(3)and O-phenyl.nediam.ne(OPD)coul. generate 1,3-dihydro-2,1,*** on the above reactions,we can detect organic sel.nium.inorganic sel.nium.and other com.ounds in l.quid sam.l.s by organic m.ss *** this experim.nt,we determ.ned the content of three form. of sel.nium.sel.nom.thionine(Sem.t),l.sel.nocystine(SeCys(2)),and sodium.*** cal.bration curves for Sem.t,SeCys(2),and sodium.sel.nite showed strong l.nearity within a range of 0.50-50.00μg/*** l.m.ts of detection(l.D)for the three com.ounds were 0.22,0.27,and 0.41μg/l.*** l.m.ts of quantification(l.Q)were 0.68,0.81,and 1.23μg/l.*** recoveries at three l.vel. ranged from.98.8%to 106.1%.In addition,this m.thod can sim.l.aneousl. detect three sel.nium.com.ounds and three other specific chem.cal.com.onents in tea infusion sam.l.s,providing a rapid and efficient m.thod for identifying tea qual.ty.

关键词： Heating reaction device Extractive el.ctrospray ionization m.ss spectrom.try Inorganic sel.nium Sel.nium.com.ounds Tea infusion

Design and preparation of a sintered Nd-Y-Fe-B m.gnet with high m.gnetic properties via m.l.i-m.in-phase process and subsequent grain boundary diffusion

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Journal.of Rare Earths 2025年第2期43卷 304-311页

作者： Fugang Chen Suxin l. Jie Wang Yong Zhao Wenqiang Zhao Zhi Xu School.of m.terial. Science and Engineering Jiangsu University of Science and Technology Baotou Tianshi Rare Earth New m.terial. Co. Ltd. Jiangsu Yangzi Xinfu Shipbuil.ing Co. Ltd.

A sintered Nd-Y-Fe-B m.gnet was designed and m.nufactured by the m.l.i-m.in-phase *** distributed Y in the m.gnet decreases the adverse m.gnetic weakening effect of Y on the *** boundary diffusion process（GBDP） was conducted to further enhance the coercivity of the Nd-Y-Fe-B *** coercivity increases significantl. from.884 to 1741 kA/m.after GBDP with *** m.chanism.of the coercivity enhancem.nt is discussed based on the m.crostructure *** sim.l.tion reveal. that when the diffused Tb-rich shel. thickness is l.wer than 12 nm.the c-pl.ne shel.（perpendicul.r to the c-axis） is m.ch m.re effective in enhancing the coercivity than the side pl.ne shel.（paral.el.to the c-axis）.But when the Tb-rich shel. thickness is above12 nm.the side pl.ne shel. contributes m.re to the coercivity *** resul.s in this work can hel. to design and m.nufacture Nd-Fe-B m.gnets with l.w cost and high m.gnetic properties.

关键词： Grain boundary diffusion m.crom.gnetic sim.l.tion m.l.i-m.in-phase process Nd-Fe-B m.gnets Rare earths

Expl.ring econom.c viabl. species via assessing a tropic-specific m.croal.al.col.ection

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Journal.of Oceanol.gy and l.m.ol.gy 2025年第1期43卷 210-218页

作者： Chen m. Ni WANG Yi XIN Qinhua GAN Wenxu ZHOU Yandu l. State Key l.boratory of m.rine Resource Util.zation in South China Sea School of Marine Biology and FisheriesHainan UniversityHaikou 570228China Hainan Engineering&Research Center of m.rine Bioactives and Bioproducts Haikou 570228China Haikou Innovation Pl.tform.for Research&Util.zation of Al.al.Bioresource Hainan UniversityHaikou 570228China Hainan Provincial.Key l.boratory of Tropical.Hydrobiotechnol.gy Hainan UniversityHaikou 570228China

l.cations around the equator provide unique habitats for m.croal.ae presum.bl. with exceptional.*** devel.p m.croal.a-derived product system.,we previousl. created a(sub)tropical.m.croal.al.*** this study,two Chl.rel.a strains(m.m.76 and m.m.93),adaptive to typical.tropical.cl.m.te,were isol.ted from.the *** production perform.nce was eval.ated where both strains showed a robust growth in high tem.eratures and l.ght ***,the strains m.m.76 and m.m.93 produced 503.6-m./(l.d)and 411.3-m./(l.d)biom.ss,respectivel.,with high contents of *** com.ercial.and nutritional.val.es were em.hasized by am.no acid com.ositions(e.g.,prol.ne,val.ne,and phenyl.l.nine).Particul.rl.,higher am.unts of prol.ne were reveal.d in m.m.76(47.9 m./g dry biom.ss(DW))and m.m.93(47.9 and 59.2 m./g DW)than avail.bl. com.ercial.*** with m.m.93,m.m.76 produced 129.7%m.re l.pids in which unsaturated fatty acids(particul.rl. l.nol.ic acid andα-l.nol.nic acid)account for 65%of the total.***,it is prom.sing to expl.re the potential.of these Chl.rel.a strains as food additives via outdoor cul.ivation in tropical.area,notabl. m.m.76 that exhibits superiority as sources of essential.am.no acids and val.abl. fatty acids.

关键词： Chl.rel.a tropical.species food additive m.croal.a

The effect of adsorbent textural.and functional.properties on m.del.naphthenic acid adsorption

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Journal.of Environm.ntal.Sciences 2025年第2期148卷 27-37页

作者： Tyl.r m.Roy El.0}ra Nazari Ol.ver K.l.Strong Paul.R.Pede Andrew J.Vreugdenhil m.terial.Science Department of ChemistryTrent University1600 West BankPeterboroughOntario K9L 0G2Canada Carbonix 690 Mountain RdSuite 200Fort William First NationOntario P7J 1G8Canada

Naphthenic acids,NAs,are a m.jor contam.nant of concern and a focus of m.ch research around rem.diation of oil.sand process affected waters,*** activated carbon adsorbents are an attractive option given their l.w cost of fabrication and im.l.m.ntation.A deeper eval.ation of the effect NA structural.differences have on uptake affinity is *** we provide an in-depth expl.ration of NA adsorption incl.ding m.ny m.re m.del.NA species than have been assessed previousl. with eval.ation of adsorption kinetics and isotherm. at the rel.vant al.al.ne pH of OSPW using several.different carbon adsorbents with pH buffering to sim.l.te the behaviour of real.*** for the NA varied considerabl. regardl.ss of the activated carbon used,ranging from.350 m./g to near zero highl.ghting recal.itrant *** equil.brium.data was expl.red to identify structural.features of these species and key physiochem.cal.properties that infl.ence *** found that certainNAwil. be resistant to adsorptionwhen hydrophobic adsorbents are *** isotherm.m.del.ing hel.ed expl.re interactions occurring at the interface between NA and adsorbent *** identified the im.ortance of NA hydrophobicity for activated carbon *** is al.o presented that indicates favorabl. hydrogen bonding between certain NA and surface site hydroxyl.groups,dem.nstrating the im.ortance of adsorbent surface functional.ty for NA *** research highl.ghts the chal.enges associated with rem.ving NAs from.OSPW through adsorption and al.o identifies howadsorbent surface chem.stry m.dification can be used to increase the rem.val.efficiency of recal.itrant NA species.

关键词： Adsorption Activated carbon m.del.naphthenic acids Isotherm.m.del.ing